to connect with I-96 and I-696. The freeway serves the population of western Wayne County and Detroit Metropolitan Wayne County Airport. The highway was originally intended to connect with I-75 north of Pontiac. I-375 was the shortest signed Interstate in the nation; it serves the immediate downtown Detroit area. I-475 is known as the UAW Freeway and the David Dunbar Buick Freeway. This freeway serves Flint's downtown areas as I-75 goes to the west side of the city. The fourth auxiliary Interstate is I-675, a loop into the city of Saginaw that served as an alternate to I-75 when the drawbridge over the Saginaw River was still operating. In addition to the auxiliary Interstates, there are eight current business routes related to the freeway in the state. These business loops and spurs provide signed connections into the downtowns of Pontiac, Bay City, West Branch, Roscommon, Grayling, Gaylord, St. Ignace, and Sault Ste. Marie. A ninth highway was previously designated in Saginaw as well. A 10th business route has been proposed for Indian River. See also Notes References External links I-75 at Michigan Highways I-75 in Michigan at AARoads Michigan 75 Lake Erie Circle Tour Lake Huron Circle Tour Lake Michigan Circle Tour Lake Superior Circle Tour Transportation in Monroe County, Michigan Transportation in Wayne County, Michigan Transportation in Oakland County, Michigan Transportation in Genesee County, Michigan Transportation in Saginaw County, Michigan Transportation in Bay County, Michigan Transportation in Arenac County, Michigan Transportation in Ogemaw County, Michigan Transportation in Roscommon County, Michigan Transportation in Crawford County, Michigan Transportation in Otsego County, Michigan Transportation in Cheboygan County, Michigan Transportation in Emmet County, Michigan Transportation in Mackinac County, Michigan Transportation in Chippewa County, Michigan